When the input signal to the ADV7623 is 1080 24p with Dolby TrueHD 7.1, I have seen the Channel Status RAW fail to ever become valid (IO 0x65 bit7) - audio PLL locks, audio type is correctly identified as HBR, all video checks out OK, but CHST valid RAW never occurs. When I hot plug the source (BluRay) there is about a 50-50 chance of this occurring.
When the CHST RAW Valid fails to get set to 1, I also see IO 0x7E bit1 and bit2 set to 1, indicating Packet error and Audio Packet errors. So my question is this: is there anyway to force a reprocessing of the channel status bytes, or to re-initialize or reset the audio sub-system? Is this a known problem with Dolby TrudHD 7.1? I have not witnessed it with any other formats.